Eoswell sheeman judson and oyeus john hancock



(o Model.) u l l R. S. JUDSON 8v G. J. HANCOCK..

MACHINE FOR SANDING BRICK MULDS.

llllllll' A Izzi/Ezztrs UNITED STATES- PATENT Ormea.

ROSWELL SHERMAN JUDSON A ND OYRUSl JOHN HANCOCK, OF MATTEAWAN,

NEW YORK.

MACHINE FOR SANDING BRlCK-NIOLDS.

SPECIFICATION forming part of Letters Patent No. 322,455, dated July 2l, 1885.

' Application filed November 13, 1884. (No model.)

I0 all whom it may concern:

Be it known that we, RoswELL S. JUDsoN and CYRUs J. HANCOCK, citizens of the United States, residing at Matteawan, in the county of Dutchess and State of New York, have invented certain newand useful Improvements in Machines for Sanding Brick-Molds; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to methods of and machines for sanding brick and similar molds; and has for its object to provide a convenient method of and simple machine in which the molds may be quickly and thoroughly sanded, and in which the unsanded molds are placed in one end of the machine and are removed from the other end,and emptied ofthe superfluous sand, allof which will be hereinafter fully described.

Her'etofore molds have been sanded by sifting sand over them. This manner is troublesome and does not give the best results, because of the irregular distribution of the sand and its not being applied to all parts of the mold.

W'ith these objections in view we have originated our improvedmethod. This consists in forcing the molds through a body of sand', so

that every part thereof is affected by the sand,

and an even distribution of the sand is secured. We preferably practice the method by the machine illustrated in the accompanying drawings, referring to which- Figure 1 is a top plan view, and Fig. 2 a vertical longitudinal section,of a machine em` bodying our improvement. Fig. Sis a detail view ofthe front board of the sandbox. Fig.

4L is a side ,View of one of the molds.

The sandbox A has its front side or board, B, provided in its lower end with an opening, C, through which the molds are inserted. The rear side, D, of the box has its upper end directed or curved forward over the interior.

We provide the inner sides of the opposite ends of the box, close to its bottom and rear side, with guide grooves E, formed by means of the cleats E. These grooves form the guides within the box in which the molds slide, and the cleats E may be extended forward horizontally overthe box, as shown,soas to enable the molds to be turned completely bottom side up in order that the sand may be thoroughly dumped therefrom, leaving only that part whichadheres to the mold, as is desirable.

Ou the bottom and inner side of the rear of the box we secure rails F, which support the molds and reduce the friction of the molds against the box, and consequently render the operation of the machine easier and reduce the wear on the molds and box. The ends of the box are extended in advance of the front B, and are provided on their inner, side with vertical cleats G, arranged a distance from the front'B equal or slightly greater than the width of the molds. The cleats G terminate short of the base A about equal the thickness of one ofthe molds, and cleats G extend horizontally forward from their lower ends, forming the guides for the pusher H, which operates between the base A and the cleats G. This pusher is moved horizontally toward opening G, and slightly through same. The opening C may be made of a height about equal the mold, so as to admit same,and yet so the sand would not pass out through the opening; but we prefer to use the guardvalve I. Thisyalve is hinged or pivotally secured at its upper end to the inner side of the front B,and its lower edgeis givenatension toward the said board either by means of aseparate spring, J, arranged as shown, or in other suitable manner 5 or the valve might be made of spring metal and made fast at its upper end to the front B, and springing at its lower end toward same; but we prefer to use the separate spring and mode of supporting the valve, as shown most clearly in Fig. 3.

While we prefer to employ the guides E, extended the full length of the bottom and rear of the box, it will be understood they might be dispensed with on the bottom of the box` and begin only about where the back D begins to curve forward from the vertical.

To operate the pusher H, we preferably employ the pitman K, connecting it with crank IOO L on shaft M, which shaft may be revolved by hand-crank M or by band-pulley from a suitable engine. In case it is driven by an engine, We prefer to use shaft N, having a band-pulley, N, and a pinion, N2, meshed with a gear, M2, on shaft M.

In practicing our invention sand is placed in the box about as shown in Fig. 2. rlhe molds are then forced through opening C. It is usual to pile a number ofthe molds,one on top of each other, between the front B and cleat G, and as thelowest oneis forced through opening Gthe next upper one falls in position. As the molds are forced into the box the valve I drops in front of them and holds them from any backward movement.

It is. preferred to use the pusher H; but manifestly said part might be dispensed with and the molds forced into the box by hand. It is also manifest that instead of carrying the molds up until they are inverted over the box the outlet of said box might be arranged horizontally opposite the inlet C, and the molds be emptied by raising and inverting it over the box A; but we prefer to arrange the outlet of the molds as shown, because therebyr they are automatically emptied, and the facility and ease of the operation is accordingly increased. The molds O may be of any proper form or construction.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

l. In a machine for sanding molds, a sandbox having a front board, B, and provided near its lower forward end with an inlet-opening, substantially as set forth.

2. In a machine for sanding molds, a box having an inlet-opening fitted to permit the insertion of the molds and provided with a Valve controlling said opening, substantially as set forth.

8. In a machine for sanding molds, a sandbox having on its opposite sides guides fitted to receive the ends of the molds and adapted to guide said molds upward and invert them over the box, substantially as set forth.

4. In a machine for sanding molds, a box formed with inlet and outlet openings and having guides on its opposite sides fitted to receive the ends of the molds, and provided on its bottom with rails, substantially as set forth.

In a machine for sanding molds, the box herein described, having an inlet-opening controlled by a suitable valve and provided with rails litted to support the molds,and provided with guides adapted to direct the molds upward and invert them over the box, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

ROSVELL SHERMAN JUDSON.

GYRUS J OHhT HANCOCK. Vitnesses:

EDGAR G. GREENE,

THoMAs J. WAY., 

